CertainTeed DiamondDeck Synthetic Underlayment 4' x 250'
Regular price $258.50The CertainTeed DiamondDeck Synthetic Underlayment 4' x 250' is a synthetic underlayment for jobs that require CertainTeed model/MPN 419050 in the RL sell unit. CertainTeed's DiamondDeck High Performance Synthetic Underlayment is manufactured to provide best-in-class performance in terms of both weather protection and contractor safety.
Key Specs
- Brand: CertainTeed
- Model / MPN: 419050
- SKU: CER419050
- Sell unit: RL
- Product type: Synthetic Underlayment
- Size / color: 4' x 250'
- Category: Residential Roofing | Residential Roofing/Underlayment | Residential Roofing/Underlayment/Synthetic Underlayment | Underlayment | Underlayment/Synthetic Underlayment
- Coverage / unit: 10 squares (1000 sq ft) per roll
Key Features
- Lightweight - Easy to work with and carry
- Excellent tear-resistance durability, reduced puncture risk
- Superior wet/dry traction - work faster and safer
- RoofRunner’s extra-large 4-foot width and 250-foot length helps speed application.
- It has a special top surface treatment that provides excellent slip resistance, even when wet.
Coverage & How Much You Need
This item is listed as 10 squares (1000 sq ft) per roll. Use the project takeoff, manufacturer installation instructions, and expected waste/overlap to confirm the order quantity.
Compatibility / Fitment
Use this item only when the brand, model/MPN, size/color, sell unit, and system type match the project specification. Do not substitute it for a different synthetic underlayment, pack size, color, membrane/system family, or installation condition without checking the manufacturer instructions.
FAQs
What exactly am I ordering?
CertainTeed DiamondDeck Synthetic Underlayment 4' x 250', sold as RL, with SKU CER419050 and manufacturer model/MPN 419050.
What model or part number should I match?
Match model/MPN 419050 and confirm the brand is CertainTeed. If the job spec lists a different model, size, color, or system family, hold for review.
What unit is the price based on?
This listing is built around the RL sell unit. Confirm the unit before comparing price, quantity, or coverage.
How do I estimate quantity?
Use 10 squares (1000 sq ft) per roll, then add waste or overlap per the manufacturer instructions and the project design.
What should be checked before purchase?
Confirm the model/MPN, sell unit, size/color, jobsite condition, compatible system components, and any manufacturer installation limits before approving the order.
Roofing and exterior-envelope work can involve fall hazards, weather exposure, fumes, adhesives, and system-specific installation requirements; follow the manufacturer instructions, OSHA-safe work practices, and local code or use a qualified contractor.
Product Expert Notes
Choose this item when CertainTeed model/MPN 419050, SKU CER419050, and the RL sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.
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